CLEANING AND

MAINTENANCE

Continued

2.Inspect burner, pilot, and primary air inlet holes on injector holder for dust and dirt (see Figure 41).

3.Blow air through the ports/slots and holes in the burner.

4.Check the injector holder located at the end of the burner tube again. Remove any large particles of dust, dirt, lint, or pet hair with a soft cloth or vacuum cleaner nozzle.

5.Blow air into the primary air holes on the in- jector holder.

6.In case any large clumps of dust have now been pushed into the burner repeat steps 3 and 4.

Clean the pilot assembly also. A yellow tip on the pilot flame indicates dust and dirt in the pilot as- sembly. There is a small pilot air inlet hole about two inches from where the pilot flame comes out of the pilot assembly (see Figure 42). With the unit off, lightly blow air through the air inlet hole. You may blow through a drinking straw if com- pressed air is not available.

LOGS

If you remove logs for cleaning, refer to In- stalling Logs, page 16, to properly replace logs.

Replace log(s) if broken or chipped (dime-sized or larger).

BURNER PRIMARY AIR HOLES

Air is drawn into the burner through the holes in the fitting at the burner entrance. These holes may become blocked with dust or lint. Periodically in-

Burner Tube

Injector Holder (May Be Brass or Aluminum Depending on Model)

spect these holes for any blockage and clean if needed. Blocked air holes will create soot.

WIRING DIAGRAMS

Note: For proper operation of optional accessories, the wires from the switch to the control must be connected exactly as shown in Figures 43 and 44.

Primary Air Inlet Holes (Shape of Holes May Vary by Model)

Figure 41 - Injector Holder On Outlet

Burner Tube

Ports/Slots

Burner

Tube

CAUTION: Label all wires prior to disconnection when servicing controls. Wiring errors can cause improper and dan- gerous operation. Verify proper operation after servicing.

AUTO

OFF

ON

Thermopile

Pilot

 

Figure 43 - Switch Wiring Diagram

Assembly

 

 

 

 

 

 

 

 

Variable

Fan Switch

 

 

Fan Switch

 

Pilot Air

 

 

(N.O.)

 

Off

1

 

 

Inlet Hole

 

 

 

2 Black

 

 

 

 

On

Blue

 

 

 

 

 

 

 

 

Red

 

 

110/115

 

 

 

 

V.A.C.

 

 

 

 

Black

 

 

 

 

Green

 

Blower

 

 

White

 

Motor

Figure 42 - Pilot Inlet Air Hole

Figure 44 - Blower Wiring Diagram

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Desa VI33PRB, VI33NRB installation manual Wiring Diagrams, Logs

VI33NRB, VI33PRB specifications

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